A channel that opens in response to the binding of a specific molecule, which is usually NOT the solute that passes through the channel is called a(n) .

Ligand gated channel

Explanation:

Ligand gated channel is an essential membrane protein that has pores and allows the passage of specific ions across the plasma membrane when it is activated by a specific chemical . Examples of such ions that pass through Ligand gated channels are Sodium ions, Potassium ions, Calcium ions. Ligand gated channels are found in extensions of the nerve cells.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.